From owner-freebsd-net@freebsd.org Mon Jun 29 07:20:19 2015 Return-Path: Delivered-To: freebsd-net@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 086E298EE8D for ; Mon, 29 Jun 2015 07:20:19 +0000 (UTC) (envelope-from gerrit.kuehn@aei.mpg.de) Received: from umail.aei.mpg.de (umail.aei.mpg.de [194.94.224.6]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id A9D811262 for ; Mon, 29 Jun 2015 07:20:18 +0000 (UTC) (envelope-from gerrit.kuehn@aei.mpg.de) Received: from mailgate.aei.mpg.de (mailgate.aei.mpg.de [194.94.224.5]) by umail.aei.mpg.de (Postfix) with ESMTP id 8C27B2001C4; Mon, 29 Jun 2015 09:20:09 +0200 (CEST) Received: from mailgate.aei.mpg.de (localhost [127.0.0.1]) by localhost (Postfix) with SMTP id 7C1DA405882; Mon, 29 Jun 2015 09:20:09 +0200 (CEST) Received: from intranet.aei.uni-hannover.de (ahin1.aei.uni-hannover.de [130.75.117.40]) by mailgate.aei.mpg.de (Postfix) with ESMTP id 41438405881; Mon, 29 Jun 2015 09:20:09 +0200 (CEST) Received: from arc.aei.uni-hannover.de ([10.117.15.110]) by intranet.aei.uni-hannover.de (Lotus Domino Release 8.5.3FP6HF1691) with ESMTP id 2015062909195859-67991 ; Mon, 29 Jun 2015 09:19:58 +0200 Date: Mon, 29 Jun 2015 09:19:58 +0200 From: Gerrit =?ISO-8859-1?Q?K=FChn?= To: Rick Macklem Cc: Scott Larson , freebsd-net@freebsd.org, carsten aulbert Subject: Re: NFS on 10G interface terribly slow Message-Id: <20150629091958.af9720d478a8903ab28adc1d@aei.mpg.de> In-Reply-To: <1629011632.413406.1435365728977.JavaMail.zimbra@uoguelph.ca> References: <20150625145238.12cf9da3b368ef0b9a30f193@aei.mpg.de> <1629011632.413406.1435365728977.JavaMail.zimbra@uoguelph.ca> Organization: Max Planck Gesellschaft X-Mailer: Sylpheed 3.4.2 (GTK+ 2.24.22; amd64-portbld-freebsd10.0) Mime-Version: 1.0 X-MIMETrack: Itemize by SMTP Server on intranet/aei-hannover(Release 8.5.3FP6HF1691 | May 7, 2015) at 29.06.2015 09:19:58, Serialize by Router on intranet/aei-hannover(Release 8.5.3FP6HF1691 | May 7, 2015) at 29.06.2015 09:20:08, Serialize complete at 29.06.2015 09:20:08 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=US-ASCII X-PMX-Version: 6.0.2.2308539, Antispam-Engine: 2.7.2.2107409, Antispam-Data: 2015.6.29.70916 X-PerlMx-Spam: Gauge=IIIIIIIII, Probability=9%, Report=' MULTIPLE_RCPTS 0.1, HTML_00_01 0.05, HTML_00_10 0.05, MIME_LOWER_CASE 0.05, BODYTEXTP_SIZE_3000_LESS 0, BODY_SIZE_1000_1099 0, BODY_SIZE_2000_LESS 0, BODY_SIZE_5000_LESS 0, BODY_SIZE_7000_LESS 0, ECARD_WORD 0, NO_URI_HTTPS 0, REFERENCES 0, __ANY_URI 0, __BOUNCE_CHALLENGE_SUBJ 0, __BOUNCE_NDR_SUBJ_EXEMPT 0, __CT 0, __CTE 0, __CT_TEXT_PLAIN 0, __HAS_FROM 0, __HAS_MSGID 0, __HAS_X_MAILER 0, __IN_REP_TO 0, __MIME_TEXT_ONLY 0, __MIME_VERSION 0, __MULTIPLE_RCPTS_CC_X2 0, __REFERENCES 0, __SANE_MSGID 0, __SUBJ_ALPHA_END 0, __SUBJ_ALPHA_NEGATE 0, __TO_MALFORMED_2 0, __URI_NO_PATH 0, __URI_NO_WWW 0, __URI_NS ' X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 29 Jun 2015 07:20:19 -0000 On Fri, 26 Jun 2015 20:42:08 -0400 (EDT) Rick Macklem wrote about Re: NFS on 10G interface terribly slow: RM> Btw, can you tell us what Intel chip(s) you're using? I have ix0@pci0:5:0:0: class=0x020000 card=0x00028086 chip=0x15288086 rev=0x01 hdr=0x00 vendor = 'Intel Corporation' device = 'Ethernet Controller 10-Gigabit X540-AT2' class = network subclass = ethernet RM> For example, from the "ix" driver: RM> #define IXGBE_82598_SCATTER 100 RM> #define IXGBE_82599_SCATTER 32 Hm, I cannot find out into which chipset number this translates for my device... RM> Btw, it appears that the driver in head/current now sets RM> if_hw_tsomaxsegcount, but the driver in stable/10 does not. This means RM> that the 82599 chip will end up doing the m_defrag() calls for 10.x. So the next step could even be updating to -current... OTOH, I get the same (bad) resulsts, no matter if TSO is enabled or disabled on the interface. cu Gerrit